A new block adaptive filtering algorithm for decision-feedback equalization of multipath fading channels

Author

Wang, Chin-Liang ; Chin-Liang Wang

Author_Institution

Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan

Volume

44

Issue

10

fYear

1997

fDate

10/1/1997 12:00:00 AM

Firstpage

877

Lastpage

881

Abstract

This brief presents a modified general optimum block adaptive (MGOBA) algorithm for block adaptive decision-feedback equalization (DFE) of multipath fading channels. Unlike the original GOBA algorithm, which was proposed only for processing real-valued signals and its recursion cannot work correctly for adaptive DFE when the block length is less than the number of decision-feedback equalizer (also abbreviated to DFE) coefficients, the MGOBA algorithm can process complex-valued signals and its recursion has no constraints on the block length as well as the number of DFE coefficients. As compared to the sequential Kalman and another previously proposed optimum block adaptive algorithms, the MGOBA algorithm achieves better error-rate performance for block adaptive DFE of rapidly fading radio channels

Keywords

adaptive filters; adaptive signal processing; decision feedback equalisers; fading; matrix decomposition; multipath channels; radiocommunication; HF radio; block adaptive decision-feedback equalization; block adaptive filtering algorithm; complex-valued signal processing; decision-feedback equalization; error-rate performance; modified general optimum block adaptive algorithm; multipath fading channels; rapidly fading radio channels; upper triangular factorization; Adaptive algorithm; Adaptive equalizers; Adaptive filters; Adaptive systems; Convergence; Decision feedback equalizers; Fading; Filtering algorithms; Intersymbol interference; Signal processing algorithms;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.633450

Filename

633450